diff --git a/haddock.cabal b/haddock.cabal
index cbb6fc9f47c4ab2f1b54d21cf4497804a9e890ba..7882fdab6c949c2111f342c02f8c0a2d6fd5b0f4 100644
--- a/haddock.cabal
+++ b/haddock.cabal
@@ -68,7 +68,7 @@ executable haddock
 
   -- haddock typically only supports a single GHC major version
   build-depends:
-    base ^>= 4.13.0.0 || ^>= 4.14.0.0 || ^>= 4.15.0.0 || ^>= 4.16.0.0 || ^>= 4.17.0.0
+    base ^>= 4.13.0.0 || ^>= 4.14.0.0 || ^>= 4.15.0.0 || ^>= 4.16.0.0 || ^>= 4.17.0.0 || ^>= 4.18.0.0
 
   if flag(in-ghc-tree)
     hs-source-dirs: haddock-api/src,  haddock-library/src